Gbiswold



(No Model.)

A. B. GRISWOLD & J. M. BRADBURY.

ATTACHMENT FOR JOURNAL BOXES. No. 349,937. Patented Sept. 28, 1886.

N ETERS. Photo-Lithographer. wmhin ton n. C.

UNITED STATES ALANSON B. GRIS\V OLD AND JOHN M. BRADBUR-Y, OF BUNKERHILL, KANS.

ATTACHMENT FOR JOURNAL-BOXES.

SPECIFICATION forming part of Letters Patent No. 349,937, datedSeptember 28, 1886.

Application filed April 15, 1886. Serial No.198,9l6. (No model.)

To all whom it may concern.-

Be it known that we, ALANSON B. GmswoLD and Joan M. BRADBURY, of BunkerHill, in the county of Russell and State of Kansas, have inventedcertain new and useful Improvements in Attachments for J ournal-Box es;and we do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it pertains to make and use it, reference being bad to theaccompanying drawings, which form part of this specification.

Our invention relates to an improvement in attachments forjournal-boxes; and it consists in the combination, with the shaft, whichis provided with a suitable projection, and the box in which it isjournaled, of a metallic strip which is composed of metals which willexpand unequally'when heated, and which has a bell, either connecteddirectly or indirectly to it, so as to be rung when the strip is struckby the projection upon the shaft, as will be more fully describedhereinafter.

The object of our invention is to attach directly to the bearing of ashaft a metallic strip which is composed of different metals, so thatwhen heated the strip will be caused to expand and assume a curved orbent shape, so as to be struck by a projection upon the shaft, and thussound an alarm.

Figures 1, 2, 4 are perspectives of slightlydifferent forms of ourinvention. Fig. 3 is a side elevation of another form.

A represents an ordinary shaft, which is provided with a projection, B,of any kind, and which may be located any desired distance :from the boxor journal 0, in which the end of the shaft has its bearing. This box 0may be of any suitable construction, and may either be made of oneuniform size from end to end, or be provided with flanges upon its end.Fastened upon this box, either by means of a clamp, G, or any otherdevice which will answer the purpose, is a metallic strip, H, which isformed of twoor more metals which will expand unequally under heat.These metals are secured together so as to form a single strip, and thestrip may be perfectly straight; or it may be wrapped one or more timesaround the oil-hole, as may be preferred. The strip, being in directcontact with the top of the box, becomes heated when the box becomesheated from the want of a lubricant, and then the free end of the strip,under the influence of the heat, curves around toward the projection onthe shaft, when it will be struck thereby, and thus sound an alarm. \Vhen the projection B is to be placed close to the bearing, as for thewant of room, then the strip will be curved or bent so as to extend oneor more times around the oil-hole, as shown in Fig. 1, or bent in anyother way that may be preferred. This bending of the strip enables asufiicient length to be given to the strip to cause it to have therequired amount of movement. \Vhere there is no want of space, theprojection B may be placed any desired distance from the box, and thenthe strip can be made perfectly straight, as shown in Fig. 4:. Inattaching this strip to the box by means of a clamp, G, or in any otherway, the outer free end of the strip is placed at a suitable angle tothe shaft, so when the strip becomes heated through the box 0 its endwill curve or bend around toward the shaft, so as to be struck by theprojection. In case the strip does not come sufficiently near to theshaft to be struck directly by the projection B, then a suitableprojection may be fastened to the strip so that it will project inwardtoward the shaft, and then this projection on the strip will be struckby the projection B upon the shaft. Connected to the outer end of thisstrip is a hell or other suitable alarm, J, which, when the strip isstruck by the projection B upon the shaft, will cause an alarm to besounded, so as to give notice that the bearing has become heated fromthe want of a lubricant. In case it is not desired to attach the bell oralarm directly to the end of the strip, then the end of the strip may beconnected by suitable levers and wires to a bell or other alarm, whichis placed in some other part of the building.

\Ve do not limit ourselves in the manner of attaching the alarm to thestrip, for this may be varied at will.

In Fig. 4 the metallic strip is shown connected to the journal-box bymeans of a clasp,

and having its outer free end catch in one of ICC the teeth of anescapement-wheelr Should the journal-box heat, the strip Willlblld, soas. to release its end from the wheel, and then the escapement-wheelwill be caused to revolve by means of the weight connected to its shaft,and the escapement thus be made to sound an alarm.

Having thus described our invention, we claim- 1. The combination of themetallic strip, formed of metals which expand unequally when heated,with the shaft, the journal box or hearing for the shaft, a projectionwhich is formed upon the shaft, and an alarm, s'ubst'an tially as shown.

2. The combination of the shaft A provided with a: projection, B, thebox 0, the strip H, formed of metals which expand and contractunequally, a suitable device for connecting th estrip to the box, and analarm which is oper- 2c ated by means of the strip, substantially as setforth.

In testimony whereof we afix our signatures in presence of twowitnesses.

ALANSON B. GRISWOLD. JOHN M. BRADBURY.

Witnesses: I

HIRAM MOOURELEY, EUGENE JUNEAU.

